Dell versus HP: Until the end of the 1980s, most personal computers companies chose to produce their items to stock and

[answerhappygod]

Dell versus HP:
Until the end of the 1980s, most personal computers
companies chose to produce their items to stock and market them
through specialized distributors and shops. This forced them to
have inventory available throughout the whole supply chain, with a
high number of different items and references.
At that time, Dell radically changed the supply chain model and
started to assemble and ship the PCs to order. Instead of having
available inventory in the shops, the company decided to centralize
the inventory of components in a few plants where products were
assembled to order and then shipped directly to the customer using
fast parcel operators.
Question
1. Draw Dell's supply chain Question
2. Draw the supply chain configuration of Question
3. Where do the differences occur?